Log turner and loader



Patented Jan. l7, I899,

T. S. WILKIN.

LOG TURNER AND LOADER.

(Application filed Apr 9, 1598) (No Model.)

THEODORE S. \VILKIN, OF BROOKVILLE, PENNSYLVANIA.

LOG TURNER AND LOADER.

SPECIFICATION forming part of Letters Patent No. 617,845, dated January17, 1899.

Application filed April 9,1898. Serial No. 677,076. (No model.)

To all whom, it may concern.-

Be it known that I, THEODORE S. WILKIN, of Brookville, in the county ofJ etferson and State of Pennsylvania, have invented a new and usefulImprovement in Log Turners and Loaders, of which the following is adescription, reference being had to the accompanying drawings, which area part of this specifi cation.

My invention relates to improvements in that class of log turners andloaders that are adapted to be used with power applied at a plurality ofpoints on the log-turner either concurrently or separately.

The invention consists of the mechanism, its parts and combinations ofparts, as hereinafter described and claimed, or their equivalents.

In the drawings, Figure 1 is an elevation of my improved log turner andloader in connection with the framing of a mill, showing the method ofits use. Fig. 2 is a side elevation as seen from the right of Fig. 1,parts being broken away to better exhibit the construction.

The framing of the mill, in connection with which my improved log turnerand loader is shown, consists, chiefly, of the ground-sills A, the postsB B, and the floor-sills O, in connection with which there is the logway or skid D and the means to support it. A logcarriage E, having aheadblock F, travels on a track alongside of the skid D. The top of theskid and the top of the head-block F, as also the other head-blocks ofthe carriage that are not shown, are flush with each other or in thesame horizontal plane, at least so far as that portion of that skid isconcerned that is adjacent to the carriage.

A toothed bar 5, employed in my log-turner, is constructed advisably oftwo flat rails with interposed blocks 6 at equal distances apart in theupper portion of the bar, the two rails of the bar being securedtogether by bolts or rivets through the rails and through the blocks 6.A number of teeth 7, arranged in a series, are severally pivoted in thebar 5 between the rails thereof and between the blocks 6 in such mannerthat they project to the front beyond the edge of the bar and, restingon the blocks 6, are adapted to engage the log and lift it as the bar isforced upwardly, while they are adapted to be lifted and thereby swungupwardly and inwardly into the bar as it goes downwardly past a log orother contacting article. The toothed bar 5 is substantially straightthroughout its length and is adapted to be moved substantiallyvertically, but with such cant or rake as is provided for by meansherein described.

At its lower extremity the bar 5 is pivoted medially to a cross-head 8,the two rails of the bar 5 straddling the cross-head and being securedthereto by a removable pin 9. By means of this construction the lowerextremity of the bar 5 can be adjusted laterally on the crosshead 8, thepin 9 therefor being adapted to be inserted in any one of a series ofapertures 10 in the cross-head 8. The cross-head 8 is pivoted at oneextremity to a head-block 11, which head-block is fixed on thepiston-stem 12, the stem being provided with a piston that reciprocatesin the vertically-disposed cylinder 13. 11 is also secured movably toand reciprocates on the fixed vertically-disposed guide-rods 14c 14. Theother extremity of the cross-head Sis provided with a link 15, by whichit is connected to the push-rod 16, which is pivoted at its lower end inthe head-block 17 and at its upper end is pivoted to thelaterallyprojecting extremities of the rails of the toothed bar 5. Thehead-block 17 is fixed on a piston-stem 18, the piston-stem beingprovided with a piston that reciprocates in the obliquely-disposedcylinder 19. The headblock 17 is also secured movably to the guiderods20 20, that are fixed in an oblique position parallel with theprolongation of the axis of the obliquely-disposed cylinder 19. Theposition of the cylinder 19 is such that a prolongation of its axisupwardly would intersect the axis or line of motion of the toothed bar 5near its upper extremity when in its lowest position, which is shown inFig. 1 of the drawlugs.

The cylinders 13 and 19 are adapted for the use therein of steam or anyother fluid medium for applying power to the pistons therein. Thesecylinders 13 and 19 and the guiderods lat and 20 are severally securedin fixed position by being attached to the framing of the mill in anysuitable manner. Two antifriction-rollers 21 21 are preferably mountedThe head-block on the upper extremity of the toothed bar 5 for relievingthe frictional contact of the toothed bar with a log or other articlecontacted thereby.

It will be understood that by movement of the push-rod 16 upward ordownward the bar 5 can be raised or lowered somewhat and at the sametime tilted or canted, as desired, and that by the raising and loweringof the head blocks 11 and 17 concurrently the cross-bar 5 may be raisedor lowered either vertically or in such raking position as it shall havebeen adjusted to by first raising or lowering the head-block 17. It willalso be seen that the rake of the toothed bar 5 may be varied byshifting the lower end of the toothed bar from one to the other of theapertures 10 in the cross-head, at the same time thereby changing theleverage on the toothed bar to a corresponding extent with relation toits support on the head 11 or the head 17.

Vhat I claim as my invention is 1. In a log-turner,the combination of asubstantially straight and upwardly and downwardly moving toothed bar, across-head to which the foot of the toothed bar is pivoted medially,means for elevating and lowering the respective ends of the cross-headeither separately or concurrently and means connected to the upperextremity of the toothbar for raising, lowering and guiding it.

2. In a log-turner, the combination of an upwardly and downwardlymovable toothed bar, a cross-head to which the foot of the toothed baris secured pivotally, means for moving one end of the cross-headvertically, and other means connected with the other extremity of thecross-head and with the upper end of the toothed bar for concurrentlyraising or lowering the upper extremity of the toothed bar and an end ofthe cross-head.

3. The combination of an upwardly and downwardly movable toothed bar, acrosshead pivoted medially to the lower extremity of the toothed bar, avertically-movable block pivoted to and carrying one end of thecrosshead, an obliquely-movable block, a push-rod pivoted to theobliquely-movable block and to the upper end of the toothed bar, and alink connecting the otherwise free end of the cross-head to the push-rodmedially.

4. The combination with an upwardly and downwardly movable toothed bar,of a crosshead, means securing the toothed bar to the cross-headadjustable laterally, a head-block to which one extremity of thecross-head is connected, a vertically-disposed power-medium cylinderprovided with a reciprocating piston carrying said head-block, a guideon which said head-block travels vertically, a push-rod connected to theupper extremity of the toothed bar, and to a head-block, saidhead-block, a guide for said last-mentioned head-block, a cylinderhaving a reciprocating piston carrying said head-block, saidlastmentioned guide and cylinder being oblique to the toothed bar, and alink connecting the push-rod to the otherwise free end of thocross-head.

In testimony whereof I affix my signature in presence of two witnesses.

THEODORE S. \VILKIN.

Vitnesses:

BEN M. CLARK, CYRUS II. BLOOD.

